When renovating an old house it is virtually inevitable that some work will be necessary on the existing Plumbing. This can be difficult as old plumbing generally uses copper piping under the floor of the house, which means that access is difficult as is the actual work. Getting a good seal on copper piping is not an easy task.
Obviously the original builders and plumbers in Dunedin for an old house did not contemplate that someone would want to rip out their work and modernise the plumbing sometime in the future, and so the modern plumber can find that the area under the house is very difficult to work in and maybe covered and rocks and glass and other rubbish which the builders tossed in to the site before they put the floor on. The original plumber might also have hung the pipes haphazardly under the floor, with no thought about future work on the piping.
Plumbers who are modernising a bathroom or kitchen I want to use modern plastic piping, and these will need to be connected to the existing copper piping. Plastic piping is much easier to work with and to bend around corners and joint into modern fittings, but getting a good seal with existing copper piping can be difficult. This difficulty can be aggregated if there is not much space for the parameter work in, for example behind a vanity or shower base. Stopping that final leaked can require multiple attempts and a difficult environment.
A typical problem for plumbers renovating a bathroom or kitchen is that the existing hot water system is low pressure, and inadequate for modern bathroom or kitchen fittings especially mixer taps and shower fittings. The typical plumber will try to encourage the homeowner to replace the low pressure system with a high pressure system, which will cost a few thousand dollars at minimum. There is however a much more simple low-cost solution, which simply involves installing a booster pump on the outlet of the hot water system. The booster plugs into a normal 3 pin plug, and turns on whenever even the smallest amount of water flow is detected, when someone turns on a hot tap in the house. While the booster pump does not provide full mains pressure, it does provide something like it that is very usable for all mixer taps and showers. Booster pumps can be found on TradeMe for less than $200, although the cost of installation will probably also be around $200, as the pump needs to be jointed to the existing copper piping.